mirror of
https://github.com/jojo61/vdr-plugin-softhdcuvid.git
synced 2023-10-10 13:37:41 +02:00
Rework shaders - Better HLG Colors
This commit is contained in:
jojo61
parent
feb7479ff8
commit
3e649a5cea
373
shaders.h
373
shaders.h
@ -1,4 +1,5 @@
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// shader
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#define SHADER_LENGTH 10000
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#ifdef CUVID
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const char *gl_version = "#version 330";
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@ -10,173 +11,6 @@ const char *gl_version = "#version 300 es ";
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#endif
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#endif
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char vertex_3[] = {"\
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%s\n\
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in vec2 vertex_position;\n\
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in vec2 vertex_texcoord0;\n\
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out vec2 texcoord0;\n\
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in vec2 vertex_texcoord1;\n\
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out vec2 texcoord1;\n\
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in vec2 vertex_texcoord2;\n\
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out vec2 texcoord2;\n\
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void main() {\n\
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gl_Position = vec4(vertex_position, 1.0, 1.0);\n\
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texcoord0 = vertex_texcoord0;\n\
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texcoord1 = vertex_texcoord1;\n\
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texcoord2 = vertex_texcoord1;\n\
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}\n"};
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char fragment_3[] = {"\
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%s\n\
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#define texture1D texture\n\
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#define texture3D texture\n\
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precision mediump float; \
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layout(location = 0) out vec4 out_color;\n\
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in vec2 texcoord0;\n\
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in vec2 texcoord1;\n\
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in vec2 texcoord2;\n\
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uniform mat3 colormatrix;\n\
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uniform vec3 colormatrix_c;\n\
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uniform sampler2D texture0;\n\
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uniform sampler2D texture1;\n\
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uniform sampler2D texture2;\n\
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//#define LUT_POS(x, lut_size) mix(0.5 / (lut_size), 1.0 - 0.5 / (lut_size), (x))\n\
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void main() {\n\
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vec4 color; // = vec4(0.0, 0.0, 0.0, 1.0);\n\
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color.r = 1.000000 * vec4(texture(texture0, texcoord0)).r;\n\
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color.g = 1.000000 * vec4(texture(texture1, texcoord1)).r;\n\
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color.b = 1.000000 * vec4(texture(texture2, texcoord2)).r;\n\
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// color conversion\n\
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color.rgb = mat3(colormatrix) * color.rgb + colormatrix_c;\n\
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color.a = 1.0;\n\
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// color mapping\n\
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out_color = color;\n\
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}\n"};
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char fragment_bt2100_3[] = {"\
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%s\n \
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#define texture1D texture\n\
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#define texture3D texture\n\
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precision mediump float; \
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layout(location = 0) out vec4 out_color;\n\
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in vec2 texcoord0;\n\
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in vec2 texcoord1;\n\
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in vec2 texcoord2;\n\
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uniform mat3 colormatrix;\n\
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uniform vec3 colormatrix_c;\n\
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uniform mat3 cms_matrix;\n\
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uniform sampler2D texture0;\n\
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uniform sampler2D texture1;\n\
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uniform sampler2D texture2;\n\
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//#define LUT_POS(x, lut_size) mix(0.5 / (lut_size), 1.0 - 0.5 / (lut_size), (x))\n\
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void main() {\n\
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vec4 color; // = vec4(0.0, 0.0, 0.0, 1.0);\n\
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color.r = 1.003906 * vec4(texture(texture0, texcoord0)).r;\n\
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color.g = 1.003906 * vec4(texture(texture1, texcoord1)).r;\n\
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color.b = 1.003906 * vec4(texture(texture2, texcoord2)).r;\n\
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// color conversion\n\
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color.rgb = mat3(colormatrix) * color.rgb + colormatrix_c;\n\
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color.a = 1.0;\n\
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// color mapping\n\
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color.rgb = clamp(color.rgb, 0.0, 1.0);\n\
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color.rgb = pow(color.rgb, vec3(2.4));\n\
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color.rgb = cms_matrix * color.rgb;\n\
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color.rgb = clamp(color.rgb, 0.0, 1.0);\n\
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color.rgb = pow(color.rgb, vec3(1.0/2.4));\n\
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out_color = color;\n\
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}\n"};
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char vertex_osd[] = { "\
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%s\n\
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in vec2 vertex_position;\n\
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in vec2 vertex_texcoord0;\n\
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out vec2 texcoord0;\n\
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void main() {\n\
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gl_Position = vec4(vertex_position, 1.0, 1.0);\n\
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texcoord0 = vertex_texcoord0;\n\
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}\n" };
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char fragment_osd[] = { "\
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%s\n\
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#define texture1D texture\n\
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precision mediump float; \
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layout(location = 0) out vec4 out_color;\n\
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in vec2 texcoord0;\n\
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uniform sampler2D texture0;\n\
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void main() {\n\
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vec4 color; \n\
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color = vec4(texture(texture0, texcoord0));\n\
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out_color = color;\n\
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}\n" };
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char vertex[] = { "\
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%s\n\
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in vec2 vertex_position;\n\
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in vec2 vertex_texcoord0;\n\
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out vec2 texcoord0;\n\
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in vec2 vertex_texcoord1;\n\
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out vec2 texcoord1;\n\
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void main() {\n\
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gl_Position = vec4(vertex_position, 1.0, 1.0);\n\
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texcoord0 = vertex_texcoord0;\n\
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texcoord1 = vertex_texcoord1;\n\
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}\n" };
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char fragment[] = { "\
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%s\n\
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#define texture1D texture\n\
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#define texture3D texture\n\
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precision mediump float; \
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layout(location = 0) out vec4 out_color;\n\
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in vec2 texcoord0;\n\
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in vec2 texcoord1;\n\
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uniform mat3 colormatrix;\n\
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uniform vec3 colormatrix_c;\n\
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uniform sampler2D texture0;\n\
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uniform sampler2D texture1;\n\
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//#define LUT_POS(x, lut_size) mix(0.5 / (lut_size), 1.0 - 0.5 / (lut_size), (x))\n\
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void main() {\n\
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vec4 color; // = vec4(0.0, 0.0, 0.0, 1.0);\n\
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color.r = 1.000000 * vec4(texture(texture0, texcoord0)).r;\n\
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color.gb = 1.000000 * vec4(texture(texture1, texcoord1)).rg;\n\
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// color conversion\n\
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color.rgb = mat3(colormatrix) * color.rgb + colormatrix_c;\n\
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color.a = 1.0;\n\
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// color mapping\n\
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out_color = color;\n\
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}\n" };
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char fragment_bt2100[] = { "\
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%s\n \
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#define texture1D texture\n\
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#define texture3D texture\n\
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precision mediump float; \
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layout(location = 0) out vec4 out_color;\n\
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in vec2 texcoord0;\n\
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in vec2 texcoord1;\n\
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uniform mat3 colormatrix;\n\
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uniform vec3 colormatrix_c;\n\
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uniform mat3 cms_matrix;\n\
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uniform sampler2D texture0;\n\
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uniform sampler2D texture1;\n\
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//#define LUT_POS(x, lut_size) mix(0.5 / (lut_size), 1.0 - 0.5 / (lut_size), (x))\n\
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void main() {\n\
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vec4 color; // = vec4(0.0, 0.0, 0.0, 1.0);\n\
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color.r = 1.003906 * vec4(texture(texture0, texcoord0)).r;\n\
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color.gb = 1.003906 * vec4(texture(texture1, texcoord1)).rg;\n\
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// color conversion\n\
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color.rgb = mat3(colormatrix) * color.rgb + colormatrix_c;\n\
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color.a = 1.0;\n\
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// color mapping\n\
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color.rgb = clamp(color.rgb, 0.0, 1.0);\n\
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color.rgb = pow(color.rgb, vec3(2.4));\n\
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color.rgb = cms_matrix * color.rgb;\n\
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color.rgb = clamp(color.rgb, 0.0, 1.0);\n\
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color.rgb = pow(color.rgb, vec3(1.0/2.4));\n\
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out_color = color;\n\
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}\n" };
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/* Color conversion matrix: RGB = m * YUV + c
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* m is in row-major matrix, with m[row][col], e.g.:
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@ -236,6 +70,18 @@ float cms_matrix[3][3] = { {1.660497, -0.124547, -0.018154},
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{-0.072840, -0.008348, 1.118751}
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};
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// Common constants for SMPTE ST.2084 (PQ)
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static const float PQ_M1 = 2610./4096 * 1./4,
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PQ_M2 = 2523./4096 * 128,
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PQ_C1 = 3424./4096,
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PQ_C2 = 2413./4096 * 32,
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PQ_C3 = 2392./4096 * 32;
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// Common constants for ARIB STD-B67 (HLG)
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static const float HLG_A = 0.17883277,
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HLG_B = 0.28466892,
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HLG_C = 0.55991073;
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struct gl_vao_entry
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{
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// used for shader / glBindAttribLocation
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@ -272,16 +118,54 @@ static const struct gl_vao_entry vertex_vao[] = {
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{0}
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};
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#define GLSL(...) pl_shader_append(__VA_ARGS__)
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#define GLSLV(...) pl_shader_append_v(__VA_ARGS__)
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char sh[SHADER_LENGTH];
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char shv[SHADER_LENGTH];
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GL_init() {
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sh[0] = 0;
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}
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GLV_init() {
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shv[0] = 0;
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}
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pl_shader_append(const char *fmt, ...) {
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char temp[1000];
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va_list ap;
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va_start(ap, fmt);
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vsprintf(temp,fmt,ap);
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va_end(ap);
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if (strlen(sh) + strlen(temp) > SHADER_LENGTH)
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Fatal(_("Shaderlenght fault\n"));
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strcat(sh,temp);
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}
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pl_shader_append_v(const char *fmt, ...) {
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char temp[1000];
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va_list ap;
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va_start(ap, fmt);
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vsprintf(temp,fmt,ap);
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va_end(ap);
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if (strlen(shv) + strlen(temp) > SHADER_LENGTH)
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Fatal(_("Shaderlenght fault\n"));
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strcat(shv,temp);
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}
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static void compile_attach_shader(GLuint program, GLenum type, const char *source)
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{
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GLuint shader;
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GLint status, log_length;
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GLint status=1234, log_length;
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char log[4000];
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GLsizei len;
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char *buffer = (char *) malloc(1000);
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sprintf(buffer,source,gl_version);
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shader = glCreateShader(type);
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glShaderSource(shader, 1, (const GLchar **)&buffer, NULL);
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glShaderSource(shader, 1, (const GLchar **)&source, NULL); // &buffer, NULL);
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glCompileShader(shader);
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status = 0;
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glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
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@ -293,7 +177,7 @@ static void compile_attach_shader(GLuint program, GLenum type, const char *sourc
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glAttachShader(program, shader);
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glDeleteShader(shader);
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free(buffer);
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}
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static void link_shader(GLuint program)
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@ -313,14 +197,43 @@ static GLuint sc_generate_osd(GLuint gl_prog)
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Debug(3, "vor create osd\n");
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gl_prog = glCreateProgram();
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GL_init();
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GLSL("%s\n",gl_version);
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GLSL("in vec2 vertex_position;\n");
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GLSL("in vec2 vertex_texcoord0;\n");
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GLSL("out vec2 texcoord0;\n");
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GLSL("void main() {\n");
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GLSL("gl_Position = vec4(vertex_position, 1.0, 1.0);\n");
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GLSL("texcoord0 = vertex_texcoord0;\n");
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GLSL("}\n");
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Debug(3, "vor compile vertex osd\n");
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compile_attach_shader(gl_prog, GL_VERTEX_SHADER, vertex_osd);
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compile_attach_shader(gl_prog, GL_VERTEX_SHADER, sh); // vertex_osd);
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GL_init();
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GLSL("%s\n",gl_version);
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GLSL("#define texture1D texture\n");
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GLSL("precision mediump float; \n");
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GLSL("layout(location = 0) out vec4 out_color;\n");
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GLSL("in vec2 texcoord0;\n");
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GLSL("uniform sampler2D texture0;\n");
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GLSL("void main() {\n");
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GLSL("vec4 color; \n");
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GLSL("color = vec4(texture(texture0, texcoord0));\n");
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#ifdef GAMMA
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GLSL("// delinearize gamma \n");
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GLSL("color.rgb = clamp(color.rgb, 0.0, 1.0); \n"); // delinearize gamma
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GLSL("color.rgb = pow(color.rgb, vec3(2.4)); \n");
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#endif
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GLSL("out_color = color;\n");
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GLSL("}\n");
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Debug(3, "vor compile fragment osd \n");
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compile_attach_shader(gl_prog, GL_FRAGMENT_SHADER, fragment_osd);
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compile_attach_shader(gl_prog, GL_FRAGMENT_SHADER, sh); //fragment_osd);
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glBindAttribLocation(gl_prog, 0, "vertex_position");
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glBindAttribLocation(gl_prog, 1, "vertex_texcoord0");
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link_shader(gl_prog);
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return gl_prog;
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}
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@ -332,42 +245,134 @@ static GLuint sc_generate(GLuint gl_prog, enum AVColorSpace colorspace)
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GLint cmsLoc;
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float *m, *c, *cms;
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char *frag;
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GL_init();
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GLSL("%s\n",gl_version);
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GLSL("in vec2 vertex_position; \n");
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GLSL("in vec2 vertex_texcoord0; \n");
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GLSL("out vec2 texcoord0; \n");
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GLSL("in vec2 vertex_texcoord1; \n");
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GLSL("out vec2 texcoord1; \n");
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if (Planes == 3) {
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GLSL("in vec2 vertex_texcoord2; \n");
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GLSL("out vec2 texcoord2; \n");
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}
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GLSL("void main() { \n");
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GLSL("gl_Position = vec4(vertex_position, 1.0, 1.0);\n");
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GLSL("texcoord0 = vertex_texcoord0; \n");
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GLSL("texcoord1 = vertex_texcoord1; \n");
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if (Planes == 3) {
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GLSL("texcoord2 = vertex_texcoord1; \n"); // texcoord1 ist hier richtig
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}
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GLSL("} \n");
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Debug(3, "vor create\n");
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gl_prog = glCreateProgram();
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Debug(3, "vor compile vertex\n");
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// printf("%s",sh);
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compile_attach_shader(gl_prog, GL_VERTEX_SHADER, sh );
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switch (colorspace) {
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case AVCOL_SPC_RGB:
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m = &yuv_bt601.m[0][0];
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c = &yuv_bt601.c[0];
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frag = Planes == 3?fragment_3:fragment;
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Debug(3, "BT601 Colorspace used\n");
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break;
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case AVCOL_SPC_BT709:
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case AVCOL_SPC_UNSPECIFIED: // comes with UHD
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m = &yuv_bt709.m[0][0];
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c = &yuv_bt709.c[0];
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frag = Planes==3?fragment_3:fragment;
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Debug(3, "BT709 Colorspace used\n");
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break;
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case AVCOL_SPC_BT2020_NCL:
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m = &yuv_bt2020ncl.m[0][0];
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c = &yuv_bt2020ncl.c[0];
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cms = &cms_matrix[0][0];
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frag = Planes == 3?fragment_bt2100_3:fragment_bt2100;
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Debug(3, "BT2020NCL Colorspace used\n");
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break;
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default: // fallback
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m = &yuv_bt709.m[0][0];
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c = &yuv_bt709.c[0];
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frag = Planes==3?fragment_3:fragment;
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Debug(3, "default BT709 Colorspace used %d\n", colorspace);
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break;
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}
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GL_init();
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GLSL("%s\n",gl_version);
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GLSL("precision mediump float; \n");
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GLSL("layout(location = 0) out vec4 out_color;\n");
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GLSL("in vec2 texcoord0;\ \n");
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GLSL("in vec2 texcoord1; \n");
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if (Planes == 3)
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GLSL("in vec2 texcoord2; \n");
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GLSL("uniform mat3 colormatrix; \n");
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GLSL("uniform vec3 colormatrix_c; \n");
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if (colorspace == AVCOL_SPC_BT2020_NCL)
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GLSL("uniform mat3 cms_matrix;\n");
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GLSL("uniform sampler2D texture0; \n");
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GLSL("uniform sampler2D texture1; \n");
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if (Planes == 3)
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GLSL("uniform sampler2D texture2; \n");
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GLSL("void main() { \n");
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GLSL("vec4 color; \n");
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if (colorspace == AVCOL_SPC_BT2020_NCL) {
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GLSL("color.r = 1.003906 * vec4(texture(texture0, texcoord0)).r; \n");
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if (Planes == 3) {
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GLSL("color.g = 1.003906 * vec4(texture(texture1, texcoord1)).r; \n");
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GLSL("color.b = 1.003906 * vec4(texture(texture2, texcoord2)).r; \n");
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} else {
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GLSL("color.gb = 1.003906 * vec4(texture(texture1, texcoord1)).rg;\n");
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}
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GLSL("// color conversion\n");
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GLSL("color.rgb = mat3(colormatrix) * color.rgb + colormatrix_c; \n");
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GLSL("color.a = 1.0; \n");
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Debug(3, "vor create\n");
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gl_prog = glCreateProgram();
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Debug(3, "vor compile vertex\n");
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compile_attach_shader(gl_prog, GL_VERTEX_SHADER, Planes==3?vertex_3:vertex);
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GLSL("// pl_shader_linearize \n");
|
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GLSL("color.rgb = max(color.rgb, 0.0); \n");
|
||||
// GLSL("color.rgb = clamp(color.rgb, 0.0, 1.0); \n");
|
||||
// GLSL("color.rgb = pow(color.rgb, vec3(2.4)); \n");
|
||||
// GLSL("color.rgb = mix(vec3(4.0) * color.rgb * color.rgb,exp((color.rgb - vec3(%f)) * vec3(1.0/%f)) + vec3(%f),bvec3(lessThan(vec3(0.5), color.rgb)));\n",HLG_C, HLG_A, HLG_B);
|
||||
GLSL("color.rgb = mix(vec3(4.0) * color.rgb * color.rgb,exp((color.rgb - vec3(0.55991073)) * vec3(1.0/0.17883277)) + vec3(0.28466892), bvec3(lessThan(vec3(0.5), color.rgb)));\n");
|
||||
GLSL("// color mapping \n");
|
||||
GLSL("color.rgb = cms_matrix * color.rgb; \n");
|
||||
#ifndef GAMMA
|
||||
GLSL("// pl_shader_delinearize \n");
|
||||
GLSL("color.rgb = max(color.rgb, 0.0); \n");
|
||||
// GLSL("color.rgb = clamp(color.rgb, 0.0, 1.0); \n");
|
||||
// GLSL("color.rgb = pow(color.rgb, vec3(1.0/2.4)); \n");
|
||||
GLSL("color.rgb = mix(vec3(0.5) * sqrt(color.rgb), vec3(0.17883277) * log(color.rgb - vec3(0.28466892)) + vec3(0.55991073), bvec3(lessThan(vec3(1.0), color.rgb))); \n");
|
||||
|
||||
#endif
|
||||
GLSL("out_color = color; \n");
|
||||
GLSL("} \n");
|
||||
}
|
||||
else {
|
||||
|
||||
GLSL("color.r = 1.000000 * vec4(texture(texture0, texcoord0)).r; \n");
|
||||
if (Planes == 3) {
|
||||
GLSL("color.g = 1.000000 * vec4(texture(texture1, texcoord1)).r;\n");
|
||||
GLSL("color.b = 1.000000 * vec4(texture(texture2, texcoord2)).r;\n");
|
||||
} else {
|
||||
GLSL("color.gb = 1.000000 * vec4(texture(texture1, texcoord1)).rg; \n");
|
||||
}
|
||||
GLSL("// color conversion \n");
|
||||
GLSL("color.rgb = mat3(colormatrix) * color.rgb + colormatrix_c; \n");
|
||||
GLSL("color.a = 1.0; \n");
|
||||
#ifdef GAMMA
|
||||
GLSL("// delinearize gamma \n");
|
||||
GLSL("color.rgb = clamp(color.rgb, 0.0, 1.0); \n"); // delinearize gamma
|
||||
GLSL("color.rgb = pow(color.rgb, vec3(2.4)); \n");
|
||||
#endif
|
||||
GLSL("// color mapping \n");
|
||||
GLSL("out_color = color; \n");
|
||||
GLSL("} \n");
|
||||
}
|
||||
//printf(">%s<",sh);
|
||||
Debug(3, "vor compile fragment\n");
|
||||
compile_attach_shader(gl_prog, GL_FRAGMENT_SHADER, frag);
|
||||
compile_attach_shader(gl_prog, GL_FRAGMENT_SHADER, sh);
|
||||
glBindAttribLocation(gl_prog, 0, "vertex_position");
|
||||
|
||||
for (n = 0; n < 6; n++) {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user